A. patient and optimistic B. impatient and pessimistic C. impatient but optimistic D. indifferent but impatient 参考答案:C 答案解析:观点态度题。从信的最后几句话可以看出作者有些不耐烦，但是对治好自己的病还是有信心的。
第20题: [单项选择]The well-known singer was _______ at the electronic organ by his school teacher. A. coordinated B. cooperated C. accompanied D. associated 参考答案:C 答案解析:[解析] 惯用搭配题。从题干中的electronic可，知和乐器有关，[C]accompanied“给某人伴奏”常用于 accompany sb．at sth．结构，表示“用(某种乐器)为某人伴奏”，
第36题:[单选题]This equipment can produce vivid images of the organs of the patient for doctors to analyze. A.dim B.blurry C.beautiful D.graphic 参考答案:D 本句意思：这个仪器能生成病人器官的逼真图像，以便医生进行分析。vivid意思是“生动的，栩栩如生的”，与graphic（生动的，形象的）意思相近。dim昏暗的，朦胧的；blurry模糊的；beautiful漂亮的。
